If you find a stripe-like rash on your child’s arm or leg, you might be concerned. But it might be a harmless rash called lichen striatus. This type of rash usually forms one or two lines of pink, ...

Lichen planus is more of a chronic discomfort than a serious health concern. However, people with the oral form have a slightly higher risk of developing oral cancer. Lichen planus is a group of ...

They are chartreuse and vivid orange, velvety black and speckled red. They are shaped like ruffles, flowers, golf tees, tiny volcanoes, and even letters. And most people never notice them. Those who ...

A lichen, or lichenized fungus, is actually two organisms functioning as a single, stable unit. Lichens comprise a fungus living in a symbiotic relationship with an alga or cyanobacterium (or both in ...

All winter, I stared at my magnolia tree’s bare branches, wishing for spring. Except, when I looked closely, I saw that the branches weren’t bare. While I waited for green leaves and pink blossoms, I ...

A unique long-term study performed by researchers at Umeå University shows that the pendent lichen Usnea longissima has decreased by 42% over 37 years in Skuleskogen National Park, located in High ...